Trolley.



No. 815,283. PATENTED MAR. 13, 1906.

P. J. GIBBS.

TROLLEY.

APPLIOATIOH FILED JAN; 20. 1905.

2 SHEETS-SHEET 1.

. wwmgl PATENTED MAR. 13, 1906.

F. J. GIBBS. TROLLEY.

APPLICATION mum JAN. 20. 1905.

2 SHEETS-SHEET 2 FRANK J. GIBBS, OF TYRUNE, PENNSYLVANIA.

THOLLEY.

Specification of Letters Patent.

Patented March 13, 1906.

Appllnatlun filer] January 20, 1906. Berle] No. 241,960.

To all whom it may concern:

Be it known that I, FRANK J. GIBBS, a citizen of the United States,residing at Tyrone, in the county of Blair and State of Pennsylvania,have invented a new and useful Trolley, of which the following is aspecification.

This invention relates to improvements in trolleys for use in securingelectrical connections with overhead feed-wires.

()ne of the obiects of the invention is to provide a novel structurewhich will have s iaced bearings upon the wire, will accommo- (lateitself to the curves thereof and kinks therein, and will therefore moresecurelv maintain a proper engagement with such wire.

A further object is to provide a structure which will practically besuspended from the pole bracket-arms, so that it will maintain a properposition even when disen aged from the wire, thereby obviating the objection of top-heaviness and permitting the convenient and readyreplacement or engagement of the trolley with the wire.

An embodiment of the invention that is at resent considered preferableis illustrated m the accompanying drawings, \vhcrcin Figure 1 is a sideelevation of such embodiment. Fig. 2 is a to plan view of the same. Fig.3 is a longitudinal sectional view. Fig. 4 is an end elevation of thefront trolleywheel and uide-rollers therefor, a portion of said wheeleing shown in section. Fig. 5 is a rear elevation of the gear-wheel andthe guide-arms coacting therewith. Fig. 6 is a cross-sectional viewtaken on the line 6 6 of Fig. 2. Fig. 7 is a detail bottom perspectiveview of the carrienbracket and the positioning-s ring mounted thereon,and Fig. 8 is a detai pers ective view of the body of the pivot mem er.

Similar reference-numerals desi nate corresponding parts in all thefigures of the drawlugs.

In the embodiment illustrated a ortion of a pole 9 is employed, whichmay )0 of any well-known or desired construction and cari rics at itsupper end spaced bracket-arms 1U. the upper terminals of \Vllltl] areprovided i with eves ll. Said upper terminals are conbody 12, locatedbetween the arms and connected thereto by headed journal-pins l3,

threaded into the ends of the body and rotatably passing through theeyes 11. A head member 14 is also located between the bracket-arms 10and consists of a to plate 15, located over the pivot-member bot y, saidplate having depending side walls 16, pro vided with slots 17, throughwhich the journal-pins 13 pass, the end walls 18 of the slots beingadapted to abut against the journalpins and constituting stop-shoulders,as is ereinafter described. The head 14 is rovided with a de endingsubstantially upright pivot 19, whicli may be integral therewith andpreferably is so constructed in order that it may turn with the head.This pivot 19 passes downwardly through an opening 20, ormcd in the bod12 of the ivot member, the lower end of the pivot being reduced indiameter and constituting a stem 21, which is threaded and has alongitudinal keyway 22. By this ivotal connection it will be a parentthat t e head 14 can swing in a su stantially horizontal direction uponthe pivot member, this swinging movement being limited by the length ofthe slots 17,0r, in other words, by the engagement. of the end walls ofthe shoulders 13 with the journal-pins 13. Furthermore, as the pivotmember can turn on a horizontal axis the said head is also capable of anupright swinging movement.

in order to reduce friction between the pivot member and head,rollerbearings in the form of balls 23 are interposed between said headand the body 12, being preferably located in raceways or grooves '24,formed in the up er side of said body 12 contiguous to the cm s of thcsame and also in a circle about the pivot.

In order to rovent the head becol'ning detached from he pivot member, anut 25 is threaded upon the stem 31 of the pivot, and for the purpose ofmaintaining the head in a predetermined position with respect to thepivot member a positioning-spring is employed. This positioning-springis a leafsprmg 26, secured between its ends to the curved flange '27 ofa carrier-bracket 28.

mounted upon the stem 21 below the nut :25

and having a key '39, that cn agcs in the keyway 2;, said brnr-kctsbeing ihus held against relative rotation with respect to tho pivot bysaid boy and being maintained against displat-cutout by u out till,threaded on the stem nccted by a pivot member consisting of a andbearing against the bracket. The leafspring 2t: is fastened to thcllaugc by suitable rivets 3| or other fasteners. which pass throu h saidflange .27, through the spring .26, and through a gunrd-phite 31..located outside said plate. The terminal portions of the spring,slidably engage in guideways 33, formed on the pivot-member body 12 bymeans of depending oll'set lugs 34, spaced from and carried by the bodymember, all of which is shown in Ft". 2 of the drmvings.

The head 14 carries oppositidy-extending cars 3."), located in advanceand in rear of the pivot member, these cars terminating in upstandinghook portions 36, that receive axles 37, on which are journaledtrolley-wheels 38, preferabl ball-bearing, as indicated in dotted linesin Fig. 4 at 39. It is to be observed that the axles 37 are locatedlower than the axis of movement of the pivot member and that the frontaxle is disposed closer to said pivot member than the rear axle. This(lisposition is important for the reasons hereinafter set forth.Contact-plates 37, secured to certain of the cars 35, have oll'setterminals provided with openings that receive the reduced ends 38 of thewheel-hubs and bear against shoulders 39 thus formed on said hubs.Secured to the front ears 35 of the head, by means of the front axle 37,are upstanding brackets 40, having spaced inner and outer legs 41, toand between which are journalcd cone guiderollers 42, located onopposite sides of .the front wheel 38, with their inner peripheralmargins dis osed directly adjacent thereto. Secured in ike mannor to therear ears 35 of the head by means of the rear axle 3?, are rcarwardlyand upwardly extending guide-arms 43, the upper terminal portions 44 ofwhich diverge, while the intermediate portions of said arms are locateddirectly adjacent to the peri heral edges of the wheel, as illustratedin ig. 5. An 0 )cnjng 45 is formed in one of the depending side walls 16of the hcad,and in this opening is secured the usual trolley-r0 e 46.

It will be observed that when t 19 trolleywhccls 38 are upon a feed-wirethey can continue in contact with the same without regard to the curvesthereof or the kinks therein, and even should one of the wheels breaksuch contact for an instant the other will remain in en agcmcnt, andthus sparking to a very considerable de ree is avoided. The wheels canturn to filllow the curvatures of the wire, for the head carrying saidwheels can turn horizontally on its vertical pivotal connection with thepivot member and can also swing vertically, because of the pivotalconnections of said member with the bracketarms of the pole. Thepositioning-s Jring, however, normallv maintains the bee in apredetermined relation with respect to the ivot member, as will beapparent, and thus if the wheels are removed from the wire thispositioning-spring will hold the head in such position. Furthermore,when the trolley is discnga ed from the wire, being practicallysuspenclbd from the hanger-arms, it will not be top-heavy. This, it isthought, will be apparent when it is considered that the axles of thewheels are located below the pivot-axis of the pivot member and saidmember is arranged as high as is practicable. The rear end of thetrolley, moreover, overbalances the front end, so that said rear endwill drop to the lower position. In placing the trolley upon a wirestrain is of course ut upon the rope 46. This will cause the head toswim' in an upriht direction, raising the rear wlicel above t e frontwheel and movin the guidearms 43 to a substantially uprig t position, sothat the rear wheel can be conveniently engaged witmwire. Upon releasinthe strain upon the rope 46 the front whee will move it wardly and thewire, guided bv the cone-r0 lers, will engage the same. When both wheelsare upon the wire, the rear 'uides extending rearwardly are substantialy out of the way of cross-sup orts and similar devices. The strueture, terefore, is so formed that it may be conveniently and readily placedagainst the wire.

From the foregoing it is thought that the construction, operation, andmany advantages of the herein-describedinvention will be a parent tothose skillet] in the art without urther description, and it will beunderstood that various chan cs in the size, shape, proportion, andminor dztails of construction may be resorted to without departing fromthe spirit or sacrificing any of the advantages of the invention.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. In a trollev, the combination with a supportin -pole havin 1upstanding bracketarms, of amend locate between the bracketarms, atransverse substantially horizontal ivot member connecting the headbetween its ends and the arms, trolley-wheels located in advance and inrear of the pivot member, and axles for the wheels carried by the head,said axles being disposed lower than the pivot member and the front axlebeing arranged nearer the axis of said ivot member than the rear axle,whereby t 10 rear end of said head overbalances the front end.

2. In a trolley, the combination with a support, of a pivot memberpivotally mounted on the support, and a head movably mounted on thepivot member and swinging therewith in one direction, said head having amovement on the pivot member in another direction, and said pivot memberhaving a portion thereof located in the path of movement of the head forlimiting the swinging movement of said head upon and with r spect to thepivot member.

3. in a trolley, the combination with a support, of a pivot membermovably lnount ed on the support, and a swinging head pivotall vsupported on the pivot member, said pivot member having a portionconstituting a stop to limit the swinging movement of the head withrespect to said pivot member, said head swinging into and out ofengagement with said portion.

4. In a trolley, the combination with a support of a pivot memberpivotally mounted on the support, a swinging head, and a pivotconnecting the head and ivot member and extending transversely of t elatter, said head being arranged to engage the pivot member u on itsswinging movement on the ivot and eing thereby limited in said swingingmovement.

5. In a trolley, the combination with a support, of a pivot memberpivotally mounted on the support, a swinging head, and a pivotconnecting the head and pivot member, and extending transversely of thelatter, said head having stop-shoulders arranged to abut against thepivot member.

6. In a trolley, the combination with a support, of-a pivot memberpivotally mounted in the support, a swinging head, and a pivotconnecting the head and pivot member and extending transversely ofclatter, said head having a de ending wall provided with a slot throughW ich the pivot member extends. l

'7.-. In a trolley, the combination with a pole'having bracket-arms, ofa member connecting the arms, a head located over the member and havindepending side walls rovided with slots t irough which the memer asses,a trolley-wheel carried by the head and a pivotal connection between thehead and member.

8. In a trolle the combination with a pole having braclZet-arms, of apivot member connecting and journaled upon the bracketarms, a headcomprising a casing located over the pivot member, a depending pivot forthe head passing through the pivot member, said head havin side wallsprovided with slots through which the pivot member passes, andtrolley-wheels journaled on the head in advance and in rear of the pivotmember.

9. In a trolle the combination with a pole having bracl r et-arms, of apivot member connecting the arms, a head extending over and on o positesides of the pivot member between t e arms, an upright pivot connectingthe head and member, wheels carried by the head on opposite sides of themember, a series of balls interposed between the head and pivot memberand disposed directly about the pivot, and other balls interposedbetween the pivot member and head directly adjacent to the connectionsof said pivot member with the bracket-arms.

10. In a trolley, the combination with a pole having upstanding armsprovided with eyes, of a pivot member comprising a body portion,'ournal-pins enga 'n said body portion an passing throng t e eyes of thebracket-arms, a head extending over the pivot member and havingoppositely-extending ears, wheels journaled to and between the cars, deending walls constituting parts of said hea and having slots throughwhich the journal-pins pass, and roller-bearings in terposed between thehead and body of the pivot member.

11. In a trolley, the combination with a pole having braeketearms, of apivot device connecting the arms, a head, a pivot connceting said deviceand head, a wheel carried by the head, and a positioningsprint carriedby the pivot, extending longitudinally of the axis of said pivot device,and transverse] r of the head, said s ring having an interloclredengagement wit 1 the device for maintaining the head in a predetermined)osition. i

12. In a trolley, the com ination with a support, of a pivot memberpivotally carried thereby and having a guideway, a head pivoted on themember and movable therewith and with respect thereto, a wheel carriedby the head, and a positioning-spring movable with the head and slidablein the guideway upon the movement of said head with respect to the pivotmember.

13. In a trolley, the combination with a support, of a pivot memberpivotally mounted thereon transversely of the sup ort and having anoffset lu forming a guideway, a head mounted on t e pivot member, asubstantially upright pivot connecting the member and head and turningin the pivot memher, and a leaf-spring secured to the pivot and swingingupon the movement thereof, said spring having a free ortion slidable inthe guideway formed by the lug.

14. In a trolley, the combination with pole having spaced bracket-arms,of a pivot member journaled on the bracket-arms, a head carrying atrolley-wheel, a substantially upright pivot carried by the head andjournaled in an intermediate portion of the pivot member, ofiset lugscarried by and spaced from the pivot member on opposite sides of thepivot, and a leaf-spring secured between its ends to the pivot andhaving its Terminal portions slidablybearing against the 15. In atrolley, the combination with a support, of a member mounted on thesupport transversely thereof, a head carried by the member and having atrolleywheel, said member extending transversely of the head, a pivotcarried by the head and passing throu h the member, a carrier-bracketsecured to t e pivot and turning therewith, and a leafspring securedbetween its ends to the carner-bracket and having its terminal portionsslidablv interlocked with the member.

16. In a trolley, the combination with a pole having spacedbracket-arms, of a pivot member connecting the arms, a head mount ed onthe pivot member and having a sub stantially upright swinging movement,trolley-wheels located in front of and behind the pivot member,guide-rollers carried by the front portion of the head and located onopposite sides of the front wheel, and rearwardly-extending guide-armscarried by the rear end of the head and having divergentlydisposedterminals located on opposite sides of the rear wheel.

1?. In a trolley, the combination with a support, of an axle securedthereto a trolley journaled on the axle and having a hub provided with areduced rotating portion forming a shoulder, and a contact-plate securedto the su port and having an 0 enin that receives the reduced portion oft e hu said plate bearing against the shoulder and said reduced portionof the hub rotating in the plate.

18. In a trolley, the combination with a )ole, of a head having apivotal connection between its ends with the pole wheels ournaled uponthe head and eu o posite si es of said )ivotal connection, the Tentwheel being is osed closer to the said connection than t e rear wheel,rearwardly-extending guide devices carried by the rear portion of thehead on opposite sides of the wheel, and means connected to the headbetween its ends for raisin r the rear portion of the head and bringingt 1e guide devices substantially to upri ht position.

19. n a trolley, the combination with a support, of a member mounted onthe sup- )ort, a head carried by the member and havmg a trolley-wheel, apivot carried by the head and passing through the member, a carrier-bracet mounted on the pivot, said bracket and pivot having an interlockingliey and keyway connection, a flange forming a part of said bracket, anda spring secured to the flange and engaged with the said member.

In testimony that I claim the foregoing as my own I have hereto aflixedmy signature in the presence of two witnesses.

FRANK J. GIBBS.

Witnesses:

WILLIAM H. AGNEW, FRANK X. HEWEL.

